do {
int x1, x2, x3, x4;
- x3 = MUL(t[16], FIX(SQRT2*0.5));
+ x3 = MUL(t[16], FIX(M_SQRT2*0.5));
x4 = t[0] - x3;
x3 = t[0] + x3;
- x2 = MUL(-(t[24] + t[8]), FIX(SQRT2*0.5));
+ x2 = MUL(-(t[24] + t[8]), FIX(M_SQRT2*0.5));
x1 = MUL((t[8] - x2), xp[0]);
x2 = MUL((t[8] + x2), xp[1]);